Guys in a message , i wrote few months ago, the cheapest way is to
get to an hydroponic cultutre store , they use it a lot , here in
Canada it's around $10 cdn for a litre
Bruno
--- In
Homebrew_PCBs@yahoogroups.com, "Stefan Trethan"
<stefan_trethan@...> wrote:
>
> On Sun, 15 Oct 2006 23:25:35 +0200, nixiebuilder <g_cw@...> wrote:
>
> > Went surfing and came up with this
> > http://wolfcreekranch1.tripod.com/foodgrade_h202.html
> > <http://wolfcreekranch1.tripod.com/foodgrade_h202.html> is
the "food
> > grade 35% H202" usable for copper bd etchant? Kind of spendy,
huh??
> > Maybe I'll just stick with the HD wood bleacing kit.
>
>
> 1 gallon for $50.. that's like not quite 4 liters, right?
> I dunno exactly what i pay, but with 1 liter bottle it's _well_
below
> 10eur, i expect maybe 3 or 4eur, if that.
> It's not food grade, but $50 seems quite excessive to make PCBs
with.
> Also, this seems to me a bit like a snake oil vendor, and i would
refrain
> from buying anything from such sources on principle.
>
> ST
>